2 * Netlink inteface for IEEE 802.15.4 stack
4 * Copyright 2007, 2008 Siemens AG
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 * Sergey Lapin <slapin@ossfans.org>
21 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
22 * Maxim Osipov <maxim.osipov@siemens.com>
25 #include <linux/kernel.h>
26 #include <net/netlink.h>
27 #include <net/genetlink.h>
28 #include <net/wpan-phy.h>
29 #include <net/af_ieee802154.h>
30 #include <net/ieee802154_netdev.h>
31 #include <net/rtnetlink.h> /* for rtnl_{un,}lock */
32 #include <linux/nl802154.h>
34 #include "ieee802154.h"
36 static int ieee802154_nl_fill_phy(struct sk_buff *msg, u32 pid,
37 u32 seq, int flags, struct wpan_phy *phy)
41 uint32_t *buf = kzalloc(32 * sizeof(uint32_t), GFP_KERNEL);
43 pr_debug("%s\n", __func__);
48 hdr = genlmsg_put(msg, 0, seq, &nl802154_family, flags,
53 mutex_lock(&phy->pib_lock);
54 NLA_PUT_STRING(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy));
56 NLA_PUT_U8(msg, IEEE802154_ATTR_PAGE, phy->current_page);
57 NLA_PUT_U8(msg, IEEE802154_ATTR_CHANNEL, phy->current_channel);
58 for (i = 0; i < 32; i++) {
59 if (phy->channels_supported[i])
60 buf[pages++] = phy->channels_supported[i] | (i << 27);
63 NLA_PUT(msg, IEEE802154_ATTR_CHANNEL_PAGE_LIST,
64 pages * sizeof(uint32_t), buf);
66 mutex_unlock(&phy->pib_lock);
67 return genlmsg_end(msg, hdr);
70 mutex_unlock(&phy->pib_lock);
71 genlmsg_cancel(msg, hdr);
77 static int ieee802154_list_phy(struct sk_buff *skb,
78 struct genl_info *info)
80 /* Request for interface name, index, type, IEEE address,
81 PAN Id, short address */
87 pr_debug("%s\n", __func__);
89 if (!info->attrs[IEEE802154_ATTR_PHY_NAME])
92 name = nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
93 if (name[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1] != '\0')
94 return -EINVAL; /* phy name should be null-terminated */
97 phy = wpan_phy_find(name);
101 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
105 rc = ieee802154_nl_fill_phy(msg, info->snd_pid, info->snd_seq,
112 return genlmsg_reply(msg, info);
121 struct dump_phy_data {
123 struct netlink_callback *cb;
127 static int ieee802154_dump_phy_iter(struct wpan_phy *phy, void *_data)
130 struct dump_phy_data *data = _data;
132 pr_debug("%s\n", __func__);
134 if (data->idx++ < data->s_idx)
137 rc = ieee802154_nl_fill_phy(data->skb,
138 NETLINK_CB(data->cb->skb).pid,
139 data->cb->nlh->nlmsg_seq,
151 static int ieee802154_dump_phy(struct sk_buff *skb,
152 struct netlink_callback *cb)
154 struct dump_phy_data data = {
157 .s_idx = cb->args[0],
161 pr_debug("%s\n", __func__);
163 wpan_phy_for_each(ieee802154_dump_phy_iter, &data);
165 cb->args[0] = data.idx;
170 static int ieee802154_add_iface(struct sk_buff *skb,
171 struct genl_info *info)
174 struct wpan_phy *phy;
178 struct net_device *dev;
180 pr_debug("%s\n", __func__);
182 if (!info->attrs[IEEE802154_ATTR_PHY_NAME])
185 name = nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
186 if (name[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1] != '\0')
187 return -EINVAL; /* phy name should be null-terminated */
189 if (info->attrs[IEEE802154_ATTR_DEV_NAME]) {
190 devname = nla_data(info->attrs[IEEE802154_ATTR_DEV_NAME]);
191 if (devname[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1]
193 return -EINVAL; /* phy name should be null-terminated */
198 if (strlen(devname) >= IFNAMSIZ)
199 return -ENAMETOOLONG;
201 phy = wpan_phy_find(name);
205 msg = ieee802154_nl_new_reply(info, 0, IEEE802154_ADD_IFACE);
209 if (!phy->add_iface) {
211 goto nla_put_failure;
214 dev = phy->add_iface(phy, devname);
217 goto nla_put_failure;
220 NLA_PUT_STRING(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy));
221 NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
227 return ieee802154_nl_reply(msg, info);
236 static int ieee802154_del_iface(struct sk_buff *skb,
237 struct genl_info *info)
240 struct wpan_phy *phy;
243 struct net_device *dev;
245 pr_debug("%s\n", __func__);
247 if (!info->attrs[IEEE802154_ATTR_DEV_NAME])
250 name = nla_data(info->attrs[IEEE802154_ATTR_DEV_NAME]);
251 if (name[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1] != '\0')
252 return -EINVAL; /* name should be null-terminated */
254 dev = dev_get_by_name(genl_info_net(info), name);
258 phy = ieee802154_mlme_ops(dev)->get_phy(dev);
262 /* phy name is optional, but should be checked if it's given */
263 if (info->attrs[IEEE802154_ATTR_PHY_NAME]) {
264 struct wpan_phy *phy2;
267 nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
268 if (pname[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1]
270 /* name should be null-terminated */
273 phy2 = wpan_phy_find(pname);
285 msg = ieee802154_nl_new_reply(info, 0, IEEE802154_DEL_IFACE);
289 if (!phy->del_iface) {
291 goto nla_put_failure;
295 phy->del_iface(phy, dev);
297 /* We don't have device anymore */
304 NLA_PUT_STRING(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy));
305 NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, name);
309 return ieee802154_nl_reply(msg, info);
321 static struct genl_ops ieee802154_phy_ops[] = {
322 IEEE802154_DUMP(IEEE802154_LIST_PHY, ieee802154_list_phy,
323 ieee802154_dump_phy),
324 IEEE802154_OP(IEEE802154_ADD_IFACE, ieee802154_add_iface),
325 IEEE802154_OP(IEEE802154_DEL_IFACE, ieee802154_del_iface),
329 * No need to unregister as family unregistration will do it.
331 int nl802154_phy_register(void)
336 for (i = 0; i < ARRAY_SIZE(ieee802154_phy_ops); i++) {
337 rc = genl_register_ops(&nl802154_family,
338 &ieee802154_phy_ops[i]);